CVE-2026-27437
Deserialization Vulnerability in Tennis Club Plugin Enables Object Injection
Publication date: 2026-03-05
Last updated on: 2026-03-06
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| patchstack | tennis_club | to 1.2.3 (inc) |
| themerex | tennis_club | to 1.2.3 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-502 | The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
Users are strongly advised to apply Patchstack’s mitigation rule to block exploitation attempts until an official patch becomes available.
Since no official patch has been released for this vulnerability in Tennis Club Theme versions up to 1.2.3, applying the mitigation rule is the immediate recommended step.
Can you explain this vulnerability to me?
CVE-2026-27437 is a high-severity PHP Object Injection vulnerability in the WordPress Tennis Club Theme versions up to and including 1.2.3.
This vulnerability allows unauthenticated attackers to inject malicious PHP objects, which can lead to serious security issues such as remote code execution, SQL injection, path traversal, and denial of service.
The vulnerability is due to deserialization of untrusted data, enabling attackers to exploit the theme without needing any privileges.
How can this vulnerability impact me? :
This vulnerability can have severe impacts including remote code execution, allowing attackers to run arbitrary code on the affected system.
It can also lead to SQL injection, which may compromise the database, path traversal that can expose sensitive files, and denial of service attacks that disrupt the availability of the website.
Since no privileges are required to exploit this vulnerability, any attacker can potentially take control of the affected WordPress site.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
There is no specific information provided about commands or methods to detect this vulnerability on your network or system.